This sermon explores the early church's formation and the critical importance of integrity within the community of believers. Using the story of Ananias and Sapphira from Acts 5, Pastor Stephen emphasizes the seriousness with which God views the church and its mission. The sermon highlights the contrast between genuine generosity and deceptive giving, stressing the importance of unity, shared purpose, and honesty among believers. It also introduces the first biblical use of the term "church" (ekklisia) and its significance in identifying Christians as the true people of God.